During a Manta Ray Night Dive off the Kona Coast, Hawaii a Bottlenose Dolphin swam up to one of the divers and showed him his entanglement by fishing line. Watch how the dolphin consciously seeks out the help of the diver.

Musicians perform for Canada’s beluga whales. A troupe of 10 — including a contortionist and an opera singer — plans to put a series of summertime shows for thousands of beluga whales near the mouth of Hudson Bay in northern Manitoba.Get all the details and watch some previous musical experiment by some of the performing musicians.